package cn.wolfcode.car.business.service.impl;


import cn.wolfcode.car.business.domain.Appointment;
import cn.wolfcode.car.business.domain.BpmnInfo;
import cn.wolfcode.car.business.mapper.BpmnInfoMapper;
import cn.wolfcode.car.business.query.BpmnInfoQuery;
import cn.wolfcode.car.business.service.IAppointmentService;
import cn.wolfcode.car.business.service.IBpmnInfoService;
import cn.wolfcode.car.common.base.page.TablePageInfo;
import cn.wolfcode.car.common.config.SystemConfig;
import cn.wolfcode.car.common.exception.BusinessException;
import cn.wolfcode.car.common.util.Convert;
import cn.wolfcode.car.shiro.ShiroUtils;
import com.github.pagehelper.PageHelper;
import lombok.Cleanup;
import org.activiti.bpmn.model.BpmnModel;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.repository.ProcessDefinition;
import org.activiti.image.ProcessDiagramGenerator;
import org.activiti.image.impl.DefaultProcessDiagramGenerator;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.math.BigDecimal;
import java.util.Collections;
import java.util.Date;
import java.util.List;
import java.util.zip.ZipInputStream;

@Service
@Transactional
public class BpmnInfoServiceImpl implements IBpmnInfoService {

    @Autowired
    private BpmnInfoMapper bpmnInfoMapper;
    @Autowired
    private IAppointmentService appointmentService;

    @Autowired
    private RepositoryService repositoryService;




    @Override
    public TablePageInfo<BpmnInfo> query(BpmnInfoQuery qo) {
        PageHelper.startPage(qo.getPageNum(), qo.getPageSize());
        return new TablePageInfo<BpmnInfo>(bpmnInfoMapper.selectForList(qo));
    }


    @Override
    public void save(BpmnInfo bpmnInfo) {
        bpmnInfoMapper.insert(bpmnInfo);
    }



    @Override
    public BpmnInfo get(Long id) {
        return bpmnInfoMapper.selectByPrimaryKey(id);
    }


    @Override
    public void update(BpmnInfo bpmnInfo) {

        //1：必须是消费中
        //2：改动中参数丢失问题
        bpmnInfoMapper.updateByPrimaryKey(bpmnInfo);
    }

    @Override
    public void deleteBatch(String ids) {
        Long[] dictIds = Convert.toLongArray(ids);
        for (Long dictId : dictIds) {
            bpmnInfoMapper.deleteByPrimaryKey(dictId);
        }
    }

    @Override
    public List<BpmnInfo> list() {
        return bpmnInfoMapper.selectAll();
    }


    @Override
    public void delete(Long id) {
        BpmnInfo bpmnInfo = this.get(id);
        ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery()
                .deploymentId(bpmnInfo.getDeploymentId())
                .latestVersion()
                .singleResult();
        //TODO 当需要删除流程定义时，系统可能流转很多该流程定义的流程实例对象： ProcessInstance
        //TODO 此时删之前， 需要将这些处理中流程数据恢复初始化状态

        //1: 部署流程相关数据删除(流程部署/流程定义表)-activiti7
        repositoryService.deleteDeployment(bpmnInfo.getDeploymentId(), true);

        //2:删除当初上传部署文件
        File file = new File(SystemConfig.getProfile(), processDefinition.getResourceName());
        if(file.exists()){
            file.delete();
        }
        //3：流程定义对象(自己建表)： BpmnInfo
        bpmnInfoMapper.deleteByPrimaryKey(id);
    }

    @Override
    public void deploy(String bpmnPath, String bpmnType, String info) throws FileNotFoundException {
        //1:判断参数是否合法
        //2：部署流程
        String lowStr = bpmnPath.toLowerCase();
        //文件流： 读取之前上传的流程文件
        //@Cleanup
        FileInputStream stream = new
                FileInputStream(new File(SystemConfig.getProfile(), bpmnPath));
                //FileInputStream(SystemConfig.getProfile() + "/" + bpmnPath);
        Deployment deploy = null;
        if(lowStr.endsWith("zip")){
            deploy = repositoryService.createDeployment()
                    .addZipInputStream(new ZipInputStream(stream))
                    .deploy();
        }else if(lowStr.endsWith("bpmn")){
            deploy = repositoryService.createDeployment()
                    //参数1：资源名称， 参数2：流程文件流
                    .addInputStream(bpmnPath, stream)
                    .deploy();
        }

        if(deploy  == null){
            throw new BusinessException("部署失败");
        }
        //3：创建流程定义对象-自己建表
        BpmnInfo bpmnInfo = new BpmnInfo();
        bpmnInfo.setInfo(info);
        bpmnInfo.setBpmnType(bpmnType);
        bpmnInfo.setDeploymentId(deploy.getId());
        bpmnInfo.setDeployTime(deploy.getDeploymentTime());

        //activiti7生成的流程定义表
        //获取activiti中流程定义对象的： ActProcessId  ActProcessKey
        ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery()
                .deploymentId(deploy.getId())
                .latestVersion()
                .singleResult();
        //部署对象无法获取name， 使用定义对象name(当初画流程图时指定名称)
        bpmnInfo.setBpmnName(processDefinition.getName());
        bpmnInfo.setActProcessId(processDefinition.getId());
        bpmnInfo.setActProcessKey(processDefinition.getKey());

        bpmnInfoMapper.insert(bpmnInfo);

    }

    @Override
    public void updateInfo(Long id, String info) {
        bpmnInfoMapper.updateInfo(id, info);
    }

    @Override
    public InputStream readResource(String deploymentId, String type) {
        ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery()
                .deploymentId(deploymentId)
                .latestVersion()
                .singleResult();
        InputStream inputStream = null;
        if("xml".equalsIgnoreCase(type)){
            inputStream = repositoryService.getResourceAsStream(deploymentId,
                    processDefinition.getResourceName());
        }else if ("png".equalsIgnoreCase(type)){
            //更加流程文件使用代码方式画出来
            BpmnModel model = repositoryService.getBpmnModel(processDefinition.getId());
            ProcessDiagramGenerator generator = new DefaultProcessDiagramGenerator();
            //generateDiagram(流程模型,需要高亮的节点,需要高亮的线条,后面三个参数都表示是字体)
            inputStream = generator.generateDiagram(model, Collections.EMPTY_LIST,
                    Collections.EMPTY_LIST,
                    "宋体","宋体","宋体");
        }
        return inputStream;
    }

    @Override
    public BpmnInfo queryByType(String type) {
        return bpmnInfoMapper.selectByType(type);
    }
}
